Inverted Controls setting and new eadk

What's Changed

• Add reverse controls settings by @yannis300307 in #53
• Use the new Rust template by @yannis300307 in #54

What does that mean?

• Complete rewrite of EADK for a much cleaner codebase and MIT License with built-in support for the storage.
• Now the simulator can store files just like the actual calculator.
• New settings menu with an "Inverted controls" setting.
• A fully-automatic installer script is now available for Debian users (Not widely tested, use it at your own risks). See README.
• The player head rotation is now saved correctly.

Full Changelog: v0.1.4...v0.1.5

The worlds created in the last version should be compatible.
This version will reset your settings!